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Corinna Vinschen 912c902615 Cygwin: serial: tcsetattr: set timeouts unconditionally
tcsetattr checks if the VTIME and VMIN values changed and only
calls SetCommTimeouts if so.  That's a problem if tcsetattr
is supposed to set VTIME and VIMN to 0, because these are the
start values anyway.  But this requires to set ReadIntervalTimeout
to MAXDWORD, which just doesn't happen.

Fix this by dropping the over-optimization of checking the old
values before calling SetCommTimeouts,

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2020-03-23 12:13:35 +01:00
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